diff --git a/module/script.nix b/module/script.nix
index ccba7eb..ebe9d4f 100644
--- a/module/script.nix
+++ b/module/script.nix
@@ -18,168 +18,174 @@
   ...
 }:
 ''
-  #!/usr/bin/env bash
-  set -e
-  
-  hostname=$(${hostname})
-  new_system=$(nix build --no-link --print-out-paths "${cfg.flake}#nixosConfigurations.''${hostname}.config.system.build.toplevel")
-  
-  last_flake_update_time() {
-          nix flake metadata --refresh --json "$1" | ${jq} .lastModified
-  }
-  
-  updated_since_reboot() {
-          [[ $(${stat} -c %Y /run/current-system) -gt $(($(${date} +%s) - $(${cut} -d. -f1 /proc/uptime) + $(${units} --compact --one-line "ceil($(${units} --compact --one-line "$(${systemd-analyze} time | head -n 1 | ${grep} -Eo "\S+\s+$")" seconds))"))) ]]
-  }
-  
-  boot_system_path() {
-          bpath=""
-          btime=0
-          for f in /nix/var/nix/profiles/*
-          do
-                  if [[ -z $bpath ]] || [[ $btime -lt $(${stat} -c %Y $f) ]]
-                  then
-                          bpath=$f
-                          btime=$(${stat} -c %Y $f)
-                  fi
-          done
-          if [[ -d "/nix/var/nix/profiles/system-profiles/" ]] && [[ -n "$(ls -A /nix/var/nix/profiles/system-profiles/)" ]]
-          then
-                  for f in /nix/var/nix/profiles/system-profiles/*
-                  do
-                          if [[ -z $bpath ]] || [[ $btime -lt $(${stat} -c %Y $f) ]]
-                          then
-                                  bpath=$f
-                                  btime=$(${stat} -c %Y $f)
-                          fi
-                  done
-          fi
-          echo "$bpath"
-  }
-  
-  last_update_time() {
-          rpath=$(${realpath} /run/current-system)
-          rtime=$(${stat} -c %Y /run/current-system)
-          boot_system=$(boot_system_path)
-          bpath=$(${realpath} "$boot_system")
-          btime=$(${stat} -c %Y "$boot_system")
-          if [[ "''${rpath}" == "''${bpath}" ]]
-          then
-                  if ! updated_since_reboot
-                  then
-                          echo $btime
-                          return
-                  fi
-          fi
-          if [[ $rtime -gt $btime ]]
-          then
-                  echo $rtime
+do_update() {
+        hostname=$(${hostname})
+        new_system=$(nix build --no-link --print-out-paths "${cfg.flake}#nixosConfigurations.''${hostname}.config.system.build.toplevel")
+        
+        last_flake_update_time() {
+                nix flake metadata --refresh --json "$1" | ${jq} .lastModified
+        }
+        
+        updated_since_reboot() {
+                [[ $(${stat} -c %Y /run/current-system) -gt $(($(${date} +%s) - $(${cut} -d. -f1 /proc/uptime) + $(${units} --compact --one-line "ceil($(${units} --compact --one-line "$(${systemd-analyze} time | head -n 1 | ${grep} -Eo "\S+\s+$")" seconds))"))) ]]
+        }
+        
+        boot_system_path() {
+                bpath=""
+                btime=0
+                for f in /nix/var/nix/profiles/*
+                do
+                        if [[ -z $bpath ]] || [[ $btime -lt $(${stat} -c %Y $f) ]]
+                        then
+                                bpath=$f
+                                btime=$(${stat} -c %Y $f)
+                        fi
+                done
+                if [[ -d "/nix/var/nix/profiles/system-profiles/" ]] && [[ -n "$(ls -A /nix/var/nix/profiles/system-profiles/)" ]]
+                then
+                        for f in /nix/var/nix/profiles/system-profiles/*
+                        do
+                                if [[ -z $bpath ]] || [[ $btime -lt $(${stat} -c %Y $f) ]]
+                                then
+                                        bpath=$f
+                                        btime=$(${stat} -c %Y $f)
+                                fi
+                        done
+                fi
+                echo "$bpath"
+        }
+        
+        last_update_time() {
+                rpath=$(${realpath} /run/current-system)
+                rtime=$(${stat} -c %Y /run/current-system)
+                boot_system=$(boot_system_path)
+                bpath=$(${realpath} "$boot_system")
+                btime=$(${stat} -c %Y "$boot_system")
+                if [[ "''${rpath}" == "''${bpath}" ]]
+                then
+                        if ! updated_since_reboot
+                        then
+                                echo $btime
+                                return
+                        fi
+                fi
+                if [[ $rtime -gt $btime ]]
+                then
+                        echo $rtime
+                else
+                        echo $btime
+                fi
+        }
+        
+        latest_system=$(boot_system_path)
+        
+        
+        if [[ "$(${realpath} /run/booted-system)" == "$(${realpath} /run/current-system)" ]] && [[ "$(${realpath} /run/booted-system)" == "$(${realpath} "$latest_system")" ]]
+        then
+                if [[ -f /boot/grub/grub.cfg ]]
+                then
+                        if [[ $(($(${date} +%s) - $(${cut} -d. -f1 /proc/uptime))) -gt $(${stat} -c %Y /boot/grub/grub.cfg) ]]
+                        then
+                                echo "persisting boot system"
+                                "$(${realpath} /run/booted-system)/bin/switch-to-configuration" "boot"
+                        fi
+                fi
+        fi
+        
+        if [[ "$new_system" == "$(${realpath} /run/current-system)" ]] && [[ "$new_system" == "$(${realpath} "$latest_system")" ]]
+        then
+                echo "system is up-to-date"
+                exit 0
+        fi
+        
+        system_update_time=$(last_update_time)
+        flake_update_time=$(last_flake_update_time "${cfg.flake}")
+        
+        echo "last system update: $(${date} -d @"$system_update_time")"
+        echo "last flake update: $(${date} -d @"$flake_update_time")"
+        
+        if [[ -z "$1" ]] && [[ "$system_update_time" -gt "$flake_update_time" ]]
+        then
+                echo ""
+                echo "System is newer than remote!"
+                echo "This happens if the system was updated manually or a system update failed."
+                echo "Skipping system update to prevent potential downgrade!"
+                exit 0
+        fi
+        
+        echo "Updating system ..."
+        
+        system_info_booted="$(${realpath} /run/booted-system/{initrd,kernel,kernel-modules})"                                           
+        system_info_built="$(${realpath} "''${new_system}"/{initrd,kernel,kernel-modules})"                                  
+        
+        echo $system_info_booted
+        echo $system_info_built
+        
+        current_time="$(${date} +%H:%M)"
+        
+        lower=${cfg.rebootWindow.lower}
+        upper=${cfg.rebootWindow.upper}
+        
+        if [[ "''${lower}" < "''${upper}" ]]; then
+          if [[ "''${current_time}" > "''${lower}" ]] && \
+             [[ "''${current_time}" < "''${upper}" ]]; then
+            do_reboot="true"
           else
-                  echo $btime
+            do_reboot="false"
           fi
-  }
-  
-  latest_system=$(boot_system_path)
-  
-  
-  if [[ "$(${realpath} /run/booted-system)" == "$(${realpath} /run/current-system)" ]] && [[ "$(${realpath} /run/booted-system)" == "$(${realpath} "$latest_system")" ]]
-  then
-          if [[ -f /boot/grub/grub.cfg ]]
-          then
-                  if [[ $(($(${date} +%s) - $(${cut} -d. -f1 /proc/uptime))) -gt $(${stat} -c %Y /boot/grub/grub.cfg) ]]
-                  then
-                          echo "persisting boot system"
-                          "$(${realpath} /run/booted-system)/bin/switch-to-configuration" "boot"
-                  fi
+        else
+          # lower > upper, so we are crossing midnight (e.g. lower=23h, upper=6h)
+          # we want to reboot if cur > 23h or cur < 6h
+          if [[ "''${current_time}" < "''${upper}" ]] || \
+             [[ "''${current_time}" > "''${lower}" ]]; then
+            do_reboot="true"
+          else
+            do_reboot="false"
           fi
-  fi
-  
-  if [[ "$new_system" == "$(${realpath} /run/current-system)" ]] && [[ "$new_system" == "$(${realpath} "$latest_system")" ]]
-  then
-          echo "system is up-to-date"
-          exit 0
-  fi
-  
-  system_update_time=$(last_update_time)
-  flake_update_time=$(last_flake_update_time "${cfg.flake}")
-  
-  echo "last system update: $(${date} -d @"$system_update_time")"
-  echo "last flake update: $(${date} -d @"$flake_update_time")"
-  
-  if [[ "$system_update_time" -gt "$flake_update_time" ]]
-  then
-          echo ""
-          echo "System is newer than remote!"
-          echo "This happens if the system was updated manually or a system update failed."
-          echo "Skipping system update to prevent potential downgrade!"
-          exit 0
-  fi
-  
-  echo "Updating system ..."
-  
-  system_info_booted="$(${realpath} /run/booted-system/{initrd,kernel,kernel-modules})"                                           
-  system_info_built="$(${realpath} "''${new_system}"/{initrd,kernel,kernel-modules})"                                  
-  
-  echo $system_info_booted
-  echo $system_info_built
-  
-  current_time="$(${date} +%H:%M)"
-  
-  lower=${cfg.rebootWindow.lower}
-  upper=${cfg.rebootWindow.upper}
-  
-  if [[ "''${lower}" < "''${upper}" ]]; then
-    if [[ "''${current_time}" > "''${lower}" ]] && \
-       [[ "''${current_time}" < "''${upper}" ]]; then
-      do_reboot="true"
-    else
-      do_reboot="false"
-    fi
-  else
-    # lower > upper, so we are crossing midnight (e.g. lower=23h, upper=6h)
-    # we want to reboot if cur > 23h or cur < 6h
-    if [[ "''${current_time}" < "''${upper}" ]] || \
-       [[ "''${current_time}" > "''${lower}" ]]; then
-      do_reboot="true"
-    else
-      do_reboot="false"
-    fi
-  fi
-  
-  if [[ "$system_info_booted" != "$system_info_built" ]]
-  then
-      echo "Updating system requires reboot!"
-      if [ "''${do_reboot}" != true ]
-      then
-              echo "Outside of configured reboot window, skipping update."
-              exit 0
-      fi
-  
-      echo nix-env --profile /nix/var/nix/profiles/system --set "$new_system"
-      if [[ -f /boot/grub/grub.cfg ]]
-      then
-              echo "bootloader 'GRUB' detected, configuring test-boot into new system"
-              "''${latest_system}/bin/switch-to-configuration" "boot"
-              ${grub-reboot} "NixOS - All configurations>0"
-              #${grub-reboot} "NixOS - Profile '$PROFILE_NAME'>0"
-      elif ${bootctl} list 2>&1 | ${grep} -v "No boot loader entries found." > /dev/null
-      then
-              echo "bootloader 'systemd-boot' detected, configuring oneshot-boot into new system"
-              # TODO
-	      exit -1
-      else
-              echo "test-boot not supported. persisting new boot system"
-              "''${new_system}/bin/switch-to-configuration" "boot"
-      fi
-      ${shutdown} -r +1
-  else
-      nix-env --profile /nix/var/nix/profiles/system --set "$new_system"
-      if ! "''${new_system}/bin/switch-to-configuration" "test"
-      then
-              echo "testing new configuration failed!"
-              echo "system was automatically rolled back to old configuration."
-              exit 1
-      fi
-      "''${new_system}/bin/switch-to-configuration" "boot"
-  fi
+        fi
+        
+        if [[ "$system_info_booted" != "$system_info_built" ]]
+        then
+            echo "Updating system requires reboot!"
+            if [ "''${do_reboot}" != true ]
+            then
+                    echo "Outside of configured reboot window, skipping update."
+                    exit 0
+            fi
+        
+            echo nix-env --profile /nix/var/nix/profiles/system --set "$new_system"
+            if [[ -f /boot/grub/grub.cfg ]]
+            then
+                    echo "bootloader 'GRUB' detected, configuring test-boot into new system"
+                    "''${latest_system}/bin/switch-to-configuration" "boot"
+                    ${grub-reboot} "NixOS - All configurations>0"
+                    #${grub-reboot} "NixOS - Profile '$PROFILE_NAME'>0"
+            elif ${bootctl} list 2>&1 | ${grep} -v "No boot loader entries found." > /dev/null
+            then
+                    echo "bootloader 'systemd-boot' detected, configuring oneshot-boot into new system"
+                    # TODO
+                    exit -1
+            else
+                    echo "test-boot not supported. persisting new boot system"
+                    "''${new_system}/bin/switch-to-configuration" "boot"
+            fi
+            ${shutdown} -r +1
+        else
+            nix-env --profile /nix/var/nix/profiles/system --set "$new_system"
+            if ! "''${new_system}/bin/switch-to-configuration" "test"
+            then
+                    echo "testing new configuration failed!"
+                    echo "system was automatically rolled back to old configuration."
+                    exit 1
+            fi
+            "''${new_system}/bin/switch-to-configuration" "boot"
+        fi
+}
+if do_update
+then
+  while true
+  do
+    do_update "forced"
+  done
+fi
 ''